Washer-cutter



`((o Model.) C. C. MALTBY.

WASHER GUTTER. No. 268,509. Patented 1390.5', 1882.

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CHRISTOPHER C. MALIBY, OF CHICO, CALIFORNIA.

t Y `wAst-llan-CUTTER.

SPECIFICATION forming part of Letters Patent No. 268,509, dated. December 5, 1882. Application tiled September 2, 1882. (No model.)

To all whom it may concern.-

` Be it known thatI, C. C. MALTBY, of Chico, county of Butte, State of' California, have invented an Improved Washer-Cutter; and I hereby declare the following to be a i'oll, clear, and exact description thereof.

My invention relates to an improved washercutter, and it consists ina novel arrangement and construction ofthe stock, spring-center cutting-arms, and set-screw, as will hereinat'ter be. fully set forth in the description, and particularly pointed out in the claim.

The object ot' my inventiotris to provide a washer-cutter easy of adjustment and effective in operation.

Referring to theaccompanying drawings, Figure l is atperspectve view. Fig. 2 is a vertical section.

A represents a stock having in its lower end the pivot-center B. This center is here-shown as having two tines, b, adapting it to securea better hold, though it may have more than two with like effect. The upper end of the center B-has a circumferential groove, c, in which the point of a catch, a, pivoted to the stock, is

adapted to lit, whereb \7 the stock is secured upon the center, though adapted to turn thereon. The stock A near its upper end` is slotted and receives theradial arms l) D', passing through one above the other, and litted together by tongue and groove, whereby each artn may have a movementindependent ot' the other, though both may bemoved together when desired. ThearmsD D turn dow nwardly at right angles, the upper arm, D, being outside and the lower arm, D', inside. They are provided with slender knives d d', which cut out the washer.`

Inside the stock, and secured to the Lipper end ot' the center B, is a spiral spring, e. through which and into a socket in the said center lits a pin, m, havinga largehead, wherel\ v it is hung upon and effects the spring e. The head of thispin impinges against thelower arm, D', and thus, when the catch a is raised and the center pressed against the board, the stock may be pressed down, compressing the spring e, Which throws it up again when the pressure is relieved.

E is a set-screw titted in the top of thestock. Its lower end impinges against the upper arm,

. D, and secures both radial arms atany desired point in the stock.

The opera-tion of the cutter is as follows:

The pivot-centerB is first forced into the leather or other material from which the Washer is to be cut and into the bedboard upon which the material lies. The double tine ot' the center gives it a firm hold and prevents any tendency to turn. It' I am about to cut out an annular washer,`there are two things to be determined. The first. is the diameter, ot' the washer and the second is its width. Knowingr the-se, l loosen screw E anti move out the armD to the radius desired t0 get the diameter and then move the arm D toward the arm D to get the desired width. Then by settingA tite. screw E down both arms are secured in this position. The thumb being then pressed upon thecatch a, releasing it from the groove o, the stock A is pressed down upon the center B until the knives d d are broughtin contact. with the inaterial, when by revolving the stock the knives cut. out the washer. When tini-lied and the pressure relieved the stock and knives are moved up by the spring e, and the catch ,returning to the groove c, secures them up outot' the way.

In order to insure accuracy in the adjustment ot' the radial arms, I make on thel opper arm, D, a scale denoting in inches and l'ractions thereof the radius ot' the washer, and a scale on the lower arm, D', denotingthewidth of the washer. These areshownin F19. Land by them the device may he accurately adjusted.

I am aware that washer-cutters are known in which a revolving` stoel; havinga radial a m carrying separately-adjustfible cutting-knives is used, and therefore I do not claitnsuch a device, broadly; but

What I doel-aim as new, and desire to secure by Letters Patent, is

The slotted stock A, having ay pivotcd catch, a', and the spring pivot-center 13 having a groove, c, in which the catch u, tits, and tines b, as shown, in combination with the adjustable bent radial arms D D', passing through the slotted'stock, and having cutting-knives d d'. and the set-screw E in the top ot theI stock, all arranged as shown, and substantially as herein described.

In witness whereof Ihereunto set tn v hand.

CHRISTOPHER C. MAL'IBY.

Witnesses GALEB SCOTT, R. A. ANDEasoN.

IOO 

